Hostname: page-component-7479d7b7d-767nl Total loading time: 0 Render date: 2024-07-13T18:32:39.681Z Has data issue: false hasContentIssue false

Nonsingular rings with essential socles

Published online by Cambridge University Press:  09 April 2009

G. Ivanov
Affiliation:
Department of Pure Mathematics, School of General Studies, Australian National University, Box 4, Post Office Canberra, A.C.T. 2600., Australia
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

This paper is a study of nonsingular rings with essential socles. These rings were first investigated by Goldie [5] who studied the Artinian case and showed that an indecomposable nonsingular generalized uniserial ring is isomorphic to a full blocked triangular matrix ring over a sfield. The structure of nonsingular rings in which every ideal generated by a primitive idempotent is uniform was determined for the Artinian case by Gordon [6] and Colby and Rutter [2], and for the semiprimary case by Zaks [12]. Nonsingular rings with essential socles and finite identities were characterized by Gordon [7] and the author [10]. All these results were obtained by representing the rings in question as matrix rings. In this paper a matrix representation of arbitrary nonsingular rings with essential socles is found (section 2). The above results are special cases of this representation. A general method for representing rings as matrices is developed in section 1.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1974

References

[1]Alin, J. S. and Armendariz, E. P., ‘A class of rings having all singular simple module injective’, Math. Scand. 23 (1968), 233240.CrossRefGoogle Scholar
[2]Colby, R. R. and Rutter, E. A. Jr, ‘The structure of certain Artinian rings with zero singular ideal’, J. Algebra 8 (1968), 156164.CrossRefGoogle Scholar
[3]Colby, R. R. and Rutter, E. A. Jr, ‘Semi-perfect QF-3 and PP-rings’, Osaka J. Math. 5 (1968), 99102.Google Scholar
[4]Colby, R. R. and Rutter, E. A. Jr, ‘QF-3 rings with zero singular ideal’, Pac. J. Math. 28 (1969), 303308.CrossRefGoogle Scholar
[5]Goldie, A. W., ‘Torsion-free modules and rings’, J. Algebra 1 (1964), 268297.Google Scholar
[6]Gordon, R., ‘Rings faithfully represented on their left socles’, J. Algebra 7 (1967), 303342.CrossRefGoogle Scholar
[7]Gordon, R., ‘Rings defined by R-sets and a characterisation of a class of semi-perfect rings’, Trans. Amer. Math. Soc. 155 (1971), 117.Google Scholar
[8]Harada, M., ‘QF–3 and semi-primary PP-rings I’, Osaka J. Math. 2 (1965), 357368.Google Scholar
[9]Harada, M., ‘QF–3 and semi-primary PP-rings II’, Osaka J. Math. 3 (1966), 2127.Google Scholar
[10]Ivanov, G., ‘Rings with zero singular ideal’, J. Algebra 16 (1970), 340346.Google Scholar
[11]Müeller, B. J., ‘On semi-perfect rings’, Ill. J. Math. 14 (1970), 464467.Google Scholar
[12]Zaks, A., ‘Semiprimary rings of generalized triangular type’, J. Algebra 9 (1968), 5478.CrossRefGoogle Scholar